Respiratory mask frame



FIG. 1 is a perspective view of a forehead pad for a modular breathingmask showing our design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof; and,

FIG. 6 is a right view thereof.

The broken line showing of the post portion in the figures is forenvironmental purposes only and forms no part of the claimed designinvention. The claimed design is directed towards surfaces shown in fullline and details in which surface shading has been applied.

The ornamental design for a respiratory mask frame, as shown anddescribed.